摘要 |
A display input device, when it has been determined that a plurality of messages, display periods of which overlap with each other, are mutually similar, selects one of the plurality of mutually similar messages as a display message to be displayed, and displays the display message in a display mode corresponding to a highest one of respective importance levels of the plurality of mutually similar messages, while not displaying, among the plurality of mutually similar messages, a message other than the display message. |